Thorough Introduction of The Generally Used Products in Circulating Cooling Waters

There are several kinds of organic phosphonic acids, however, in their molecular structure they have a phosphonic acid group instantly attached to a carbon atom. And also molecule may also contain groups such as -OH, -CH₂ or even -COOH.

For that reason, the number of phosphonic acid groups contained in the molecule is decided. The organic phosphoric acid could be listed into a diphosphonic acid, a triphosphonic acid, a tetraphosphonic acid, a pentaphosphonic acid and so on.

According to the types of molecular structure, the organic phosphoric acid could be further divided into a methylidene phosphonate type, a homocarbodiphosphonic acid category, a hydroxy acid phosphonic acid class, or other atomic phosphonic acid categories.

Organic phosphoric acid is known as a new product created in the later Nineteen sixties. But, it had been largely put into use inside circulating cooling the water treatment plan in the Nineteen seventies. It’s because it has got the benefits that follow.

First of all, they all have a C-P bond in their molecular structure, which bond is much more powerful compared to P-O-P bond in polyphosphate. As a result, it’s excellent chemical stableness. It isn’t simply hydrolyzed, and it’s also resistant against high temps. In the application, it does not cause orthophosphoric acid to always be overproduced due to hydrolysis.

Second of all, it’s got a very important effect similar to polyphosphate. It’s only a few mg/L of organic phosphonic acid that is able to stay away from the precipitation of a lot of hundred mg/L of calcium carbonate.

When it comes to really apply, it was discovered that use of an organic phosphonic acid combined with a polyphosphate is better than any one kinds. And additionally polyphosphate, it even features an excellent synergistic effect along with various agents.

Therefore, during workable use, people generally choose the compound formulation when using the best synergy.

Furthermore these pros, the actual organic phosphonic acid also offers nice corrosion inhibition properties with large doses. And it’s also a new non-toxic and extremely low-toxic agent. Therefore, there is no need to think about polluting the environment during being used.

Frequently being used organic phosphonic acid

There are actually lots of different types of organic phosphonic acid, nevertheless the next generally use a chemical in circulating cooling water are the following.

1. ATMP

The chemical product name is ATMP acid. ATMP has got nice chemical stableness, is difficult to hydrolyze, and it’s resistant against high temps. When it’s compounded along with zinc salts and copolymers, it provides a good synergistic effect and a solubility limit effects.

This chemical also has superior corrosion inhibition performance at large amounts. And it’s also a non-toxic, environment-friendly chemical. ATMP 50 has good dispersion and also scale inhibition properties just for calcium carbonate scale.

2. HEDP 60

HEDP chemical can be an organic phosphonic acid of the same carbon diphosphonic acid type. Its molecular structure does not include N. It’s chemical title is hydroxyethylidene diphosphonic acid. HEDP 60 can certainly form stable complexes with some other metal ions like iron, copper and zinc, and can melt oxides on steel surfaces.

3. EDTMP

The actual chemical full name is ethylenediamine tetramethylene phosphonate. It can chelate with a plurality of metal ions to create a plurality of monomer structure macromolecular system complexes, which are usually loosely spread inside waters to destroy the calcium scale crystal.

4. DTPMP

DTPMPA is an organic phosphonic acid created in the 80s. It’s chemical full name is diethylene triamine pentamethylene phosphonic acid.

It’s known as its mix with Mm²⁺, which includes good corrosion inhibition capability for the carbon steel and copper metal. Since Mm²⁺ isn’t really covered by environmental regulations, the actual ingredients of this chemical have attracted excellent interest globally.

DTPMP, such as the earlier mentioned organic phosphonic acid. It can also chelate with a plurality of metal ions. The organization of two or more three-dimensional macromolecular ring complexes, freely spread in the water, ruins the increase of calcium carbonate crystals, therefore playing a part of scale inhibition.

5. Phosphonic Acid

The phosphonic acid molecule has both the phosphate group -PO(OH) ₂ and a hydroxyl group -COOH. In accordance with them during the combination

There are actually lots of varieties inside this place and number of things. In our company’s formula, Pbtc scale inhibitor can be used much more. It’s chemical term is 2-phosphonobutane-1 2 4 trihydroxy acid.

6. Organic Phosphonate

There are lots of varieties of organic phosphonates, however adhering to groups are found inside their molecular structure:

Ever since organic phosphates are extremely toxic to aquatic animals and slowly hydrolyze, the hydrolyzed products are also bio-degradable and for that reason haven’t any influence on the environment.

Organophosphates are usually used together with other agents such as polyphosphates, zinc salts, lignin and benzotriazole.

The above is an in-depth summary of the widely used chemicals during circulating cooling water. When you have doubts about the water treatment chemicals, please contact us.